The publication reported just months ago that the 66-year-old had such an extreme case of diabetes that his life was at risk and brain cancer would certainly add to his health woes.

‘O.J. says his memory is slipping and he gets painful headaches and other symptoms,’ a source told The Enquirer, listing blurry vision, occasional stuttering and hearing problems as other concerns. He also at times feels confused and has unusual bursts of anger and fits of depression.

‘He put off the doctors for weeks after he first started experiencing the symptoms because he was afraid of what they would find,’ the source said.

‘Now the prison docs are telling him they believe he has a brain tumor. They plan to run a series of tests on him, MRIs and CT scans.’

The Enquirer reports that Simpson has finally agreed to the tests and is convinced he hasn’t got long to live, telling a friend, ‘I feel the end coming. But I don’t want to die in prison like common jailhouse scum.’